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A267347 Number of 7Xn arrays containing n copies of 0..7-1 with every element equal to or 1 greater than any north, west or southwest neighbors modulo 7 and the upper left element equal to 0. 0
1, 1, 2, 2, 4, 9, 649, 25661, 413155, 3534075, 21319105, 108404456, 526041190, 2738297888 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Row 7 of A267338.

LINKS

Table of n, a(n) for n=1..14.

EXAMPLE

Some solutions for n=7

..0..0..1..2..3..4..5....0..1..2..3..4..5..6....0..0..1..2..2..3..4

..0..1..1..2..3..4..5....1..2..2..3..4..5..6....0..1..1..2..3..4..5

..0..1..2..3..4..5..6....2..2..3..4..5..6..0....0..1..2..3..4..5..6

..1..2..2..3..4..5..6....2..3..4..5..6..0..1....1..2..3..4..5..6..6

..1..2..3..4..5..6..0....3..3..4..5..6..0..1....1..2..3..4..5..6..0

..2..3..4..5..6..6..0....3..4..5..6..0..1..1....2..3..4..5..6..6..0

..3..4..5..6..6..0..1....4..5..6..0..0..1..2....3..4..5..5..6..0..1

CROSSREFS

Cf. A267338.

Sequence in context: A267339 A308434 A121623 * A296386 A296643 A295040

Adjacent sequences:  A267344 A267345 A267346 * A267348 A267349 A267350

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 13 2016

STATUS

approved

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Last modified May 9 15:34 EDT 2021. Contains 343742 sequences. (Running on oeis4.)